Patents by Inventor Pieternel A.M Claassen

Pieternel A.M Claassen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Production of isopropanol by improved recombinant strains
    Patent number: 9399781
    Abstract: The expression vector includes: the nucleic acids coding for the polypeptides forming a polypeptide complex having an enzyme activity allowing acetoacetyl-CoA to be converted to acetoacetate; optionally, at least one nucleic acid coding for a polypeptide having an enzyme activity allowing acetoacetate to be converted to acetone; and at least one nucleic acid coding for a polypeptide having an enzyme activity allowing acetone to be converted to isopropanol; the expression of the nucleic acids being controlled by a single constitutive promoter located upstream of the abovementioned nucleic acids.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: July 26, 2016
    Assignees: IFP ENERGIES NOUVELLES, STICHTING DIENST LANDBOUWKUNDIG ONDERZOEK
    Inventors: Florent Collas, Remy Marchal, Benjamin Clement, Ana Maria Lopez Contreras, Pieternel A.M Claassen
  • PRODUCTION OF ISOPROPANOL BY IMPROVED RECOMBINANT STRAINS
    Publication number: 20140322778
    Abstract: The expression vector includes: the nucleic acids coding for the polypeptides forming a polypeptide complex having an enzyme activity allowing acetoacetyl-CoA to be converted to acetoacetate; optionally, at least one nucleic acid coding for a polypeptide having an enzyme activity allowing acetoacetate to be converted to acetone; and at least one nucleic acid coding for a polypeptide having an enzyme activity allowing acetone to be converted to isopropanol; the expression of the nucleic acids being controlled by a single constitutive promoter located upstream of the abovementioned nucleic acids.
    Type: Application
    Filed: October 3, 2012
    Publication date: October 30, 2014
    Applicant: STICHTING DIENST LANDBOUWKUNDIG ONDERZOEK
    Inventors: Florent Collas, Remy Marchal, Benjamin Clement, Ana Maria Lopez Contreras, Pieternel A.M Claassen